Briqueting-press



H. l. EKBERG.

BRIQUETING PRESS.

APPLICATION FILED JULY 11, I919.

v 1,330,434. Patented Feb. 10,1920.

Jiwen/on UNITED STATES PATENT OFFICE- HJ'AL'MAR JULIUS EKBERG, 0F STOCKI-IOLM, SWEDEN, ASSIGN OR TO OTTO WILHELM EINAR GOSLING, OF STAFSJb, SWEDEN.

BRIQUETING-PRESS.

Specification of Letters Patent.

Patented Feb. 10, 1920.

Application filed July 11, 1919. Serial No. 310,250.

The present invention relates to a briqueting press having two rolls between which the material from which the briquets are to be produced, is pressed into a more or less continuous bar of briquets. The purpose of the invention is to provide a simple and efficient device for use in such rotary presses to release the pressed bar of briquets from the pressing surfaces of the rolls without breaking the bar. For this purpose the invention is broadly characterized by this that the space between the two rolls, through which space the material passes during the pressing, is bordered at the ends of the rolls' by two rings bearing against the rolls, said rings being journaled eccentric-ally relatively to one of the rolls and having a larger diameter than said roll, so that the bar of briquets which is caused to stick to the inner sides of the rings during the pressing, is carriedaway-by the rings and thus released from the pressing surfaces of the rolls when it leaves the pressing place between the rolls. The rings may suitably be guided at the pressing place by flanges on one of the rolls against which flanges the outer sur faces of the rings are forced by the pressed material between the rings, so that in this manner the rings are caused to take part in the rotation of the roll.

An embodiment of the invention is illus trated in the accompanying drawing. Figure 1 shows the principal parts of a press according to the invention, viewed from the side and in vertical section, and Fig. 2 shows a horizontal section of the press.

Referring to the drawing, 1 and 2 denote the two press rolls one of which is preferably journaled in stationary bearings and i the other of which is resiliently maintained against the first named roll. The roll 2 is toothed or indented in order to produce the necessary dents 3 between the briquets of the pressed bar 10f briquets. Both rolls, how- Fig. 2. The other two walls parallel or nearly parallel to the pressing direction are formed by two rings 5 which ar e journaled eccentrically relatively to the' press roll 2. The rings are guided and driven by being jammed between the bar of briquets and flanges 6 on the roll 2. .The outer edges of the rings bear against rollers 7 and 8 located in such manner as to maintain the rings 5 within the grooves 13 in the roll 2 between the pressing surface of said roll and the flanges 6, for preventing the briquet material from escaping toward the sides. .The inner side of each of the rings 5 bears against one end of a roller 9 which .is somewhat longer than the distance between the rings 5 at the pressing place between the rolls. The roller'9 is located diametrically or approximately diametrically opposite the pressing place, and will thus act to guide the rings 5 apart, that is to say, so that they are separated from one another-when the lower halves of the rings move from the pressing place toward the roller 9. The material of which the briquets are to be produced, is fed through the feeding funnel 10 the lower cylindrical portion of which is provided with a feed screw 11. The purpose of said screw is to insure the feeding of the required quantity of material for producing the briquets, the thickness of the bar of briquets being regulated by adjusting the speed of the rolls.

During the pressing the rings 5 rotate eccentrically relatively to the press roll 2, that is to say out of the path of said roll. The bar of briquets which is strongly pressed on two sides against the rings, is

carried away by said rings and is in this manner released from the press roll 2. The bar of briquets is thus removed farther and farther from the roll, and finally, when the bar reaches the point where the divergence of the rings 5 caused by the roller 9 is considerably increased, the bar also works loose from the rings and becomes free. Immediately afterward the bar hits the under side of astationary shield 12 or the like against which the bar is broken off at the dents produced by the teeth on the roll 2, so that the briquets are separated from one another.

I claim:

1. In a briqueting press, the combination of two coacting press rolls and two rings pressing place between said rolls, said rings being Journaled eccentrically relatively to and having a larger diameter than one of the rolls.

2. In a briqueting press, the combination of two coacting press rolls, one of said rolls being provided with flanges, and two rings having a larger diameter than and journaled eccentrically relatively to said flanged roll between the flanges on said roll and the ends of the rolls at the pressing place between the same.

3. In a briqueting press, the combination of two coacting press rolls, two rings bearing against the ends of said rolls at the pressing place between the rolls, said rings being journaled eccentricallyrelatively to and having a larger diameter than one of said rolls, and a guide between said rings 3 approximately diametrically opposite the pressing place between the rolls, theilength of said guide in the axial direction of the tween the rings at the pressing place.

4. In a briqueting press, the combination of two: coacting press rolls, two rings bearing against the ends of said rolls at the pressing place between the rolls, said rings being ournaled eccentrically relatively to and having a larger diameter. than one of said rolls, agui'de between said rings approximately diametrically opposite the \pressing place between the rolls, the length of said guide in the axial direction of the rings being greater than the distance between the rings at the pressing place, and a shield between said rings 'for removing the briquets pressed between the rolls and the rlngs.

HJALMAR JULIUS EKBERG.

rings belng greater than the distance be- 

